Yu Yangyi (Black) Puzzle: Deflect — Win Material
Deflection is a tactical idea in which a defending piece is lured away from a critical square, file, or duty. In this position, Black uses an active rook sacrifice to force the king onto an unfavorable square, exposing a deeper attack against the queenside. The key is not the value of the first exchange, but the way it redirects the king and removes coordination between White’s queen, rook, and pinned pieces. This creates a decisive material gain through forcing play.